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Motion Module
Walking The Motion Module is a SIMM module that imports motion files created by Motion Analysis systems. Motions imported into SIMM are mapped onto a pre-built, customizable, full-body model with 344 anatomically accurate muscles. The body segments, joint kinematics, and muscle attachment sites of the model are scaled to match the size of the subject whose motion is being recorded. To accompany a motion, SIMM can also import analog data such as ground-reaction forces and muscle activation levels (EMG data). Additionally, SIMM can import kinetic data computed by OrthoTrak. The Motion Analysis file formats that SIMM can import are: TRC, TRB, ANB, ANC, and XLS. The Motion Module makes an excellent post-processing tool for analyzing a recorded motion in detail. Once the motion is imported into SIMM, it can be played back in a 3D graphical display showing the skeleton, ground-reaction forces, and muscle activations. Ground-reaction forces are displayed as vectors superimposed on the model, and the muscle activation data is used to change the size and colors of the muscles. In addition, plots can be made of joint angles, ground forces, muscle activations, and muscle lengths.

The Motion Module is the ideal tool for clinicians and researchers who want to visualize the relationships between muscle activity, external forces, and the resulting body motion. Gait analysis and sports performance centers can use SIMM and the Motion Module to analyze in detail an individual's motion and help diagnose problems and improve performance. Biomechanical research and industrial applications include product design, ergonomics analysis, and anthropology.

Motion Module (PDF, 281KB)
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